Roof scaffold



D 1955 IF. SWANBERG v 3,292,734

v ROOF SCAFFOLD Filed Oct. 12, 196 4 INVENTOR Franz E Swanberg UnitedStates Patent 3,292,734 ROOF SCAFFOLD Franz F. Swanberg, 413 W.Broadway, Monticello, Minn. 55103 Filed Oct. 12,1?64, Ser. No. 403,026Claims. ((31. 182-45) This invention relates to a device used tosimplify building construction, and more particularly to a device thatis temporarily secured to a gable, hip, peak, gambrel, mansard, or shedtype of roof, when one is laying new or repairing old shingles.

Roofers and carpenters seldom have any satisfactory device for theplacement or removal of shingles from a slanting roof. In fact they moreoften than not are forced to adapt makeshift methods that are not onlyhazardous to use, but also far from satisfactory since they are often inthe way of the actual work being done on the roof, and thus requireconstant shifting about on the roof.

It is therefore the principal object of this invention to provide a roofscaifold that can be adapted to any downwardly sloping roof while one isworking on the same.

Another object of this invention is to provide a roof scaffold that isso light in weight as to make it possible for one man to carry aroundfrom place to place.

Another object of this invention is to provide a roof scaflold that isadjustable as the work proceeds.

Another object of this invention is to provide a roof scafiold that isconstructed from easily obtainable materials found in nearly any city oreven on the farm.

Still another object of this invention is to provide a roof scaffoldthat can be taken apart in a minimum of time and made into a compactbundle for storage or transportation from job to job.

With the above more important objects and features in view and suchother objects and features as may become apparent as this specificationproceeds, the invention consists essentially of the arrangement andconstruction of parts as illustrated in the accompanying drawings, inwhich:

FIGURE 1 is a pictorial view of this invention in actual use.

FIGURE 2 is a sectional view of this invention taken substantially alongline 22 \of FIGURE 1 and viewed in the direction indicated by thearrows.

FIGURE 3 is a sectional view of this invention taken substantially alongline 3-3 of FIGURE 2 and viewed in the direction indicated by thearrows.

FIGURE 4 is a pictorial view of that portion of this invention that isenclosed within the arrowed ellipse and numeral 4 on FIGURE 1.

Like characters of reference are employed to designate like parts in thespecification and throughout the several views of the drawing.

Referring now to the accompanying drawing in detail, this inventionconsists of the upper end 7 of the two parallel members or bars 8 asfully shown in FIGURE 1 of the drawing.

A hollow metal fitting including sleeve 9 which is rectangular in crosssection, a detent 10 having a plurality of saw teeth is swingablymounted under the top 11 of the aforesaid sleeve 9 in order to grip andhold that one of the aforesaid members 8 that pass through the fitting,as clearly shown in FIGURES 2 and 3 of the drawing. A swingable arm 12is secured to one side of the aforesaid hollow metal fitting 9. The armis provided with two or more openings 13 through which nails 14 areplaced and driven into the roof thereby providing a means of securingthis invention to the aforesaid roof.

A second hollow metal fitting is slidably positioned on each bar. Thissecond fitting includes a second metal sleeve 15 which is rectangular incross section, a detent 10 having saw teeth swingably mounted withinsaid second sleeve and a transverse metal sleeve 17 secured to theunderside of the second metal sleeve 15. A cross bar 18 extends throughthe transverse metal sleeves.

All a person has to do in order to use this novel invention of a roofscaffold is to place the same on the roof in the position shown inFIGURE 1 of the drawing over the place where one desires to placeshingles. The members 8 are now adjusted longitudinally, as desired, andthe nails 14 are driven in place as has been previously stated.

While preferring the details of structure shown and described, it is tobe understood that various changes and modifications may be resorted towithout materially changing the function of the structure, and,therefore, I consider as within the spirit of the present invention suchchanges and variations as may fall within the scope of the appendedclaims.

Having thus described the invention, what is claimed as new is:

1. A roof scalfold comprising, two substantially parallel wooden bars, ahollow metal fitting for each bar, each fitting including, a metalsleeve, said sleeves fitting over corresponding ends of said bars, meansto secure said ends in said sleeves, an arm swingably secured to eachsleeve by a pivot which is transverse to said bars, means to secure saidarms to a roof, a second hollow metal fitting for each bar, each secondfitting including a second metal sleeve fitting over the correspondingbar to slide thereon, means to secure each second metal sleeve in anyadjusted position on the corresponding bar, and a cross barinterconnecting said second metal sleeves.

2. The combination of claim 1 in which the wooden bars are rectangularin cross section and the metal sleeves are rectangular in cross section.

3. The combination of claim 1 in which the means to secure each secondmetal sleeve in any adjusted position is a detent having saw teethpivotally secured within said sleeve.

4. The combination of claim 1 in which the means for securing eachsleeve to the bar is a detent having saw teeth, said detent pivotallysecured within said sleeve.

5. The combination of claim 1 in which a transverse sleeve is secured tothe underside of each second sleeve and the cross bar extends throughthe transverse sleeves.

References Cited by the Examiner UNITED STATES PATENTS 852,141 4/1907Sebree 182-45 X 2,814,533 11/1957 Van Horn 182-45 X FOREIGN PATENTS540,763 5/ 1957 Canada.

REINALDO P. MACHADO, Primary Examiner.

1. A ROOF SCAFFOLD COMPRISING, TWO SUBSTANTIALLY PARALLEL WOODEN BARS, AHOLLOW METAL FITTING FOR EACH BAR, EACH FITTING INCLUDING, A METALSLEEVE, SAID SLEEVES FITTING OVER CORRESPONDING ENDS OF SAID BARS, MEANSTO SECURE SAID ENDS IN SAID SLEEVES, AN ARM SWINGABLY SECURED TO EACHSLEEVE BY A PIVOT WHICH IS TRANSVERSE TO SAID BARS, MEANS TO SECURE SAIDARMS TO A ROOF, A SECOND HOLLOW METAL FITTING